Carton forming machine



July 25, 1933. E. G. JURGENS ETAL CARTON-FORMING MACHINE Filed Jima 1931 8 Sheets-Sheet v1 I LL.'

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. July 25, 1933. E. @,JURGENS r Ax.

' CARTON FORMING MACHINE .Filed June 19. 1931 8 Sheets-Sheet 2 .lllllllnm July 25, 1933 E. G. JURGENs Er A1. 1,919,787`

CARTON FORMING MACHINE Filed June 19. 1931 ya sheets-sheet 3 July 25, 1933. E. GJJURGENS Er AL- QARTON FORMING MACHINE Filed June 19, 1931 8 Sheets-Sheet 4 July 25, 1933. E. G. JuRGENs ET Al. 1,919,787

` CARTON FORlldING MACHINE Filed June 19, 1931 a sheets-sheet 5 July 254, 1933. E. G.y JuRGENs E11-M 'I 1 1,919,787

CARTON FORMIYNGMACHINE Filed June 19. 1931 8 sheetslsheet 6 July 25, 1933. E. G. JURGENs Er AL `.17,919,787

CARTON FORMING MACHINE 8 Sheets-Sheet 7 Filed June 19, 1931 w wf MM July 25,71933. i ElYGfJuRGENs Er AL n 1,919,787

CARTON FORMING MACHINE Filed June 19.. 193i a sheets-sheet 8 "Tl Aggllll Z, o .,nllh

l v Patented July 25, 1933 UNITED STATES.

PATENT .OFFICE j EHIL G. JRGENS AND I. BECKER, OF CHICAGO, ILLINOIS, ASSIGNOBS TO PETERS MACHINERY CO., OI C HICAGO, ILLINOIS, A. CORPORATION OF ILLINOIS CARTON FORHING MACHINE v Application.- led J une 19,

the machine, either by hand or automatically.

The invention may be carried into practice by means of a construction such as that u, illustrated in thedrawings, inwhich;

Figure 1 shows the machine in front elevation..

Fig. 2 is a side view of the machine. Fig. 3 is a plan view ofthe machine, but 2'- with the forming die omitted to show folding mechanism beneath, and it is partly in section as 'indicated by the line 3-3 of Fig. 1. vFig. 4 is a large sectional view taken on fthe line 4-4 of Fig. 3. f u -Fig. 5 is la. vfragmentary sectional view taken on the line 5--5 of Fig. 1.

Fig. 6 is an enlarged fragmentary sectional view taken on the Vline 6--6 of Fig. 5. w, Fig. 7 is an enlarged fragmentary sectional view taken on the line 7 7 of Fig. 3.

Fig. 8 is an enlarged sectional detail taken on the lin'e 8-8 of Fig. 3.

` Fig. 9'is a sectionalview on the line 9--9l u of Fig. 8. A Fig. 10 is afragmentary sectional detail taken on theline 10--l0'of Fig. 1.

Fig. 11 is a sectional plan view showing the motor drive for a machine taken on the n line v11---11 of Fig. 1.

Fig. 12 is a sectional detail taken on the line 12--12 of Fig. 11. f

Fig. 13 is a' fragmentary detail to illustrate an automatic clutch as indicated by the line '13-13 of Fig. 1.

Fig. 14 is a plan view of thec'arton blank and-lining paper thereon of the kind which is 'folded by means of this'machine.

Figs. 15 to 19 are sectional viewsas indicated by the line 15;-15 of Fig. 3, illustl'at` per at the back'of the carton.

v1981. Serial No. 545,462.

`ing successive positions of the folding'y and end-flap-tucking element. Y

Fig. is'a perspective view of a folded. carton ready for filling and as delivered by the machine.

Fig. 21 is a perspective view showing the carton lining paper partly folded-'and indicates', partly broken away, one of a air of oscillating wingsrwhich aid in creasing the lining paper to prevent buckling of the pa- The purpose of this invention is to fold carton blanks, with or without lining paper, ready for .receiving the contents to be packaged, such as lard, butter or vegetable shortening, which is owed into the receptacle after delivery from the machine, the top of the carton being left open for this purpose.

Briefly stated the machine consists of a frame structure supporting a table top provided with ahorizontally reciprocating blank receiving element which may carry the blank Y and lining paper placed thereon from a rey ceiving position to a position under a ver-.-

tically reciprocal forming element whichl 16, Y

moves downwardly, engaging the portion of the blank formingthe bottom of the carton, and pressing it through a recess in the table, while the front, rear and side portions of the carton engage folding elements, most of which are movable in timed relation to effect Dthe correct folding of the blank and the lining paper, and the interlocking of the end `flaps. y

Also operable in conjunctionwith these folding devices are plungers for opening slits* in end members of the blank, in time for re` ceiving an' interlocking tongue, and a pair of oscillating lining paper creasing elements which assist in making aneat package in which the-lining paper closelyA lits the walls of the carton.

Referring to the drawings, the frame struc- I ture 1 carries at its-lower end, as illustrated in Figs. 1 andlll, a motor 2 for driving the machine through the reduction gearing 3.

-This gearing serves to drive the main drive shaft 4 through a clutch 5, under the control of the slidabie @one 6, whih my be shifted as im' machine, the shaft 4 serves'to continuously' 5' reciprocate the carton formingdie 8, Fig'. 1,

and a carton blank feeding element 22, Fig. 5, which serves toplace the blank and also the lining paperfbeneath the die 8. The shaft4 also 'intermittently drives the carton blank folding ,devices shown in'Figs. 15 to 19, in-

elusive.

The die l8 is secured to the' underside of an4 arm 18, Figs. 1 and 2, extending horizontally from a pair of vertically reciprocal shafts 19 guided in bearings in the machine frame an v having a pitman connection 20 with a crank 21 on the shaft 4. Thus the die Sis continuously reciprocated during the operation of the drifve shaft4. l 20 The carton blank feeding mechanism, Fig. 5, includes a `pair of adjustable elements 23, which engage the `blanks edgewise during the vhorizontal motion of the member 22 toward i the ,die 8.`4 The edge of the liningfpaper` 25 placed over the blank is engaged by the flange 24 carried by feed element 22. Fixed to the latter are racks 25 meshing with pinions26'` between these racks and stationary racks 27. The pinions areprolled along the racks 27 by horizontall movement of their supporting shaft 28 underl the action of an oscillating arm 29 pinned to ashaft 30, Figs. 1 and 2. The shaft30carries an arm 31, to which is pivoteda pitman 32, Fig. 12, operated by cam 33 onshaft 4. .4 y

I The cartonfolding mechanism is driven by achain 34 connecting a` Sprocket 35 on shaft 4, withV a sprocket 36, Fig. 8, carried.

by clutch element 37, freely rotatable upon the drive shaft@ 38, for the blank folding mechanism. vWhile the sprocket 36 is continuously jdriven, shaft-38 is vintermittently driven in the same direction when clutched to the sprocket.

A clutch element 39 l. is splined to shaft 38, and rotated' when a pin 40 supported thereon is turned so that a cut-away face 41 thereof is brought into position to be` engaged by similar pins 42, carried by clutch element 37 The pin 40 is rocked at theproper time' for causing engagementof theclutch by means of a spring '43,Fi`g.- 13, when a pawl 44en-r lgages a finger l45 carried by pin 40. n y

p This pawl isV rocked to-permit the clutch to engage, and to bedisengagedbythe pawl y again rcomlngzinto the path of finger 45, wby o means offa pitman 46 `operated by cam 47 on shaft 4. The finger 45 is limited in its movement by jflat surfaces 48 thereof engaging thefiat surface on clutchmember 39.

The carton, blank, folding kmechanism includes, as shown in Figs. 3, 4` 5 and 6, three shafts 50, 51 and. 52. yThe shaft 38 drives v the shaft 50 through .the'coupling 53. The shaft 50 drives shaft 52 through Vthe gearing 54, Fig.v7 and shaft 52, as shown in Fig. 6, carries a gear 55 for the purpose of driving shaft 51 through gearI 56, Fig. `3. Shafts 50and 51 carry folding elements 57, and the shaft 521carries a pair of folding elelments 58.

When a carton blank is deposited beneath the die 8 by the blank carrying mechanism 22, die 8 engages the blank at portion 59 thereof, Fig. 14, which forms the bottom of the carton. 1.As the blankmoves downwardly the front side there'of is bent upwardly by the fixed shoulder 61, Fig. 5, of the table top. Simultaneously the, endextensions 62 of the bottom 59 of the blank are bent upwardly by engaging the ends 63 of folding elements 458. The part of the blank forming the rear vwall 64 and the top 65 of the carton, is bent upwardly by engagement with the top edge 66 of a wing 67. which at this time 1s in vertical position. Shafts 50,- 51 and 51 rotate inv end element 70 of the blank forwardly. At

this time the locking extension 71 of the carfon end element 70 is slightly bent inwardly by stationary spring elements 72` as the die continues. to travel downwardly. At this time. as indicated bv Fig. 17, the end element 70 of'the blank overlies the slotted part 69,-

with which it is finally interlocked. The

interlocking takes place subsequently. as the purpose of the folding means so far described/is merely to correctly fold'the carton along scored lines.

The interlocking of the end flaps 69 and 70 is accomplished by returning the end and `topportions'64 and. 65 of the blank to the position indicated by Fig. 18, and again moving these portions of the blankforwardlv so that the interlocking tongues 71 may .enter the slots 73 while the tongues are guided inwardly-and the slots held open bv pressing members 74. To effect this interlocking of the carton ends. the Wingv 67 is oscillated.

The shaft 75 supporting wing 67 as shown bv Fig.4. is provided with an arm 76 having a roller'77 forengaging cam 78. carried on a short shaft 79 with a gear 80. 'which meshes with one of the gears 54. The cam serves to rock the Awing in one direction against the action of thefestoring yspring v81. shown in Fig. 5. Rigid with the wing 67 are hook shaped members 82 which -engage the end ,portions of they carton blank Whenth'e wing 67 rocks rearwardly and lao i compels the back portion of the carton t0 follow the wing, as indicated` in Fig. 18.

-After the interlocking has been effected pins 83 on cams 58 engage the side edges of v the4 folded carton as indicated in Fig. 19, and

y 85 carried by shaft 52.

In case lining paper has been placed upon a blank as the latter is folded, the lining paperis folded with the blank in such manner that it may be withdrawn with its contents from the cardboard portion of the carton. The lining paper is folded around the die -8 with the cardboard blank, and in order to prevent the tendency of the lining paper to buckle along the rearv wall of the carton, a pair of creasing wings 86, Fig. 1, are employed to correctly crease the lining paper along the back of the carton, as illustrated by Fig. 21., the crease referred to being indicated at 87'. These wings are pivotally supported at 88 upon a fixed bridge 89 and are held separated by springs 90, Fig. 4. During the downwardmotion of die 8, a roller 91 carried by the die supporting arm 18 passes between the cam surfaces 92 of wings 86 and rocks the lower end of the wings toward each other. Roller 91 may be mounted as indicated in Fig. 10, so as to be ineffective on the up-motion of the die 8. Y

In operation of this carton folding may chine, the continuously driven drive shaft 4 63 of cams 58.

operates in correctly timed relation the horizontally reciprocating blank feeding mechanismillustrated in Fig. 5, `the vertically reciprocating plunger or die element 8, and the rotating shafts 50, 51 and 52," which operate the folding device. These shafts are intermittently operated, the blanks being placed beneath the die between operations of the shafts.

When a blank is engaged by die8 ,upon its downward motion, the part' 59 of the blank forming the bottom of the carton.` passes between the fixed edge 61, Fig. 5, the upper edge 66 ofwing 67, and the extensions Thus the forward and rearward walls and the end portion 62 are simultaneously folded upwardly, and then the end fiaps 69 and 70 are successively folded against the end element `62 of the. carton re-. spectively bv portions 68 of cams 58 and the cams 5,7. Then the wing 67 is rocked backwardly and forwardly. tointerlock the end portions 69 and 70 of the carton, while the locking tongues 71 are guided into the slots 73 by presser elements 74. The rear wall of the carton'during the oscillation of wing 67.

is preferably guided by stationary guide members 93.

The above described mechanism, while pering' elements.

4 ing operation isperformed.`

forming vthe same folding operations, and somewhat the same ultimate result as w1th the other machines, for instance, the con-y struction described in the previously mentioned' patent' to Peters, the manner of performing the operations, andthe arrangement' of the mechanism in the present case permit of an economical machine, capable of rapidly erforming the desired actions, and insulng a highly satisfactory product.

Although but one specific embodiment of this invention has been herein shown and described, it will be understood that certain details of the construction shown may be altered or omitted without departing from the. spirit of this invention as dened by the following claims. l We claim: v'

support for carton blanks havlng an opening therein, a' reciprocating die for engaging 1. In a carton blank foldin machine, a

a portion of the blank and forcing the blank through such opening, means for engaging y side and end portions of the blank and fold- -ing them upwardly as the blank passes through said opening, a shaft extending parallel with one slde of said opening and carrying end flap folding elements, means for rotating said shaft and the folding elements carried thereby, said folding elements being provided with means for engaging and'e'ecting the cartons after the folding thereo 2. In a carton blank folding machine, a support for carton blanks having an opening therein, a reciprocating die for engaging a portion of the blank and' forcing the blank through 'such opening, means for engaging side and end portions of the blank and foldingthem upwardly as the blank passes through said opening, a shaft extending parallel with one side of said opening and carrying end flap folding elements, means for rotating said shaft and the folding elements carried thereby, cooperating folding elements driven by said shaft and arranged to effect interlocking engagement between end portions of the folded carton.I

3. In a carton blank folding machine, a

table top having an opening therein, a blank feeding means 'movable horizontally along said table top for depositing carton blanks` over said openln a reciprocating die lfor pressing the blan through said opening, rotarycarton end folding and interlocking elements, and means for continuously driving said feeding means and die and intermittently operating said folding and interlock- 4. In a carton blank folding machine, driving mechanism, means operated thereby for simultaneously folding a .carton blank and lining paper therefor, and separate means for creasing the lining paper at the time-the fold- 5. In a carton blank folding machine, a

forming die, means for folding vthe side. and

` end portions of theblanlz` against the die,

i said means including rotary cams and a piv oted folding wing, means for producing two oscillations of saidwing each time a blank is ing end tucking iiaps on'a blank as the wing oscillatcs. .A .6. In a carton blank folding machin e a forming die, means for reciprocating the -Y a shaft at one side of the path ofmovement of -said die and carrying folding cams for engagingendflap portions of the blank as the die moves by said shaft, a folding wing at vthe opposite side of the pathof movement of said die,'end flap folding cams adjacent said wing, andi means for intermittently' rofolded, and reciprocating plungers for guidwardly tions of said wing, one of the oscillations being for folding a carton and the other oscilff latlonbeln' for tuckin the end flaps of a cartnm-sai side hook-s allrled ing arrangedto hook over t e edge ofthe end l tuck flags3 of a carton and to draw them rear;V fore the completion .of the tucking oscillation. i v

' EMIL G. JRGENS.

HAZEN K. BECKER. 

